Physical Activity and Smell Trainings to Help Individuals With Coronavirus Disease (COVID-19) Recover From Persistent Smell and Taste Impairments - A Pilot Study

• Physical activity (Behavioral): For 12 weeks, do 150 minutes of moderate physical activity per week and wear a smart watch to monitor this physical activity goal. This is done remotely. Then, every two weeks, attend a remote individual meeting with a kinesiologist using a secured application (15 minutes each). Each online meeting will contain the following steps: 1) Review of health and activities recorded by the activity watch/app provided to the participant; 2) Discussion on how to reach/maintain the physical activity goal in the coming weeks according to individual health status, facilitators and barriers; 3) Elaboration of the next 2-week action plan.
• Smell training (Other): For 12 weeks, morning and evening, smell four odors namely eucalyptol, phenyl ethanol, citronellal, and eugenol, for a total of five minutes per session. For each smell training session, complete a short, online survey regarding the pleasantness and intensity of the smell. This is done remotely. Then, every two weeks, attend a remote individual meeting with a research professional using secured application (15 minutes each). Each online meeting will contain the following steps: 1) Review of smell training; 2) Discussion on how to reach/maintain the training protocol in the coming weeks according to individual health status, facilitators and barriers; 3) Elaboration of the next 2-week action plan.

Primary outcomes

• Changes from baseline in olfactory score on the 40-item University of Pennsylvania Smell Identification Test (UPSIT) at week 14 [Baseline and Week 14]: The UPSIT test is a validated self-administered test that assesses olfactory function. In this test, odorants are released when participants scratch the standardized odor-impregnated test booklet. After smelling the odor, participants identify the smell from a list of odorants. Possible scores range from 0 to 40, where a higher score means a higher olfactory function. Change = (Week 14 Score - Baseline Score)
• Changes from Week 14 in olfactory score on the 40-item University of Pennsylvania Smell Identification Test (UPSIT) at Week 26. [Week 14 and Week 26]: The UPSIT test is a validated self-administered test that assesses olfactory function. In this test, odorants are released when participants scratch the standardized odor-impregnated test booklet. After smelling the odor, participants identify the smell from a list of odorants. Possible scores range from 0 to 40, where a higher score means a higher olfactory function. Change = (Week 26 Score - Week 14 Score)
• Changes from Baseline in Gustatory Score on the 27-item Waterless Empirical Taste Test (WETT-SA) at Week 14 [Baseline and Week 14]: The WETT-SA test is a validated self-administered test that assesses gustatory function. Participants rub each strip, one at a time, on their tongues in a circular fashion. Then, they have to indicate what they tasted from a provided list of answers. Participants' answers are compared to an answer key and a higher score means a higher gustatory function Change = (Week 14 Score - Baseline Score)
• Changes from Week 14 in Gustatory Score on the 27-item Waterless Empirical Taste Test (WETT-SA) at Week 26 [Week 14 and Week 26]: The WETT-SA test is a validated self-administered test that assesses gustatory function. Participants rub each strip, one at a time, on their tongues in a circular fashion. Then, they have to indicate what they tasted from a provided list of answers. Participants' answers are compared to an answer key and a higher score means a higher gustatory function Change = (Week 26 Score - Week 14 Score)
• Changes from Baseline in Quality of Life on the 26-item World Health Organizations Quality of Life - Bref (WHOQoL-Bref) Questionnaire at Week 14 [Baseline and Week 14]: This is a validated questionnaire that assesses the quality of life. Each item is rated on a 5-point Likert scale. The higher the score, the higher the quality of life of the individual. Change = (Week 14 Results - Baseline Results)
• Changes from Week 14 in Quality of Life on the 26-item World Health Organizations Quality of Life - Bref (WHOQoL-Bref) Questionnaire at Week 26 [Week 14 and Week 26]: This is a validated questionnaire that assesses the quality of life. Each item is rated on a 5-point Likert scale. The higher the score, the higher the quality of life of the individual. Change = (Week 26 Results - Week 14 Results)
• Changes from Baseline in Food Preference on the Leeds Food Preference Questionnaire (LFPQ) at Week 14 [Baseline and Week 14]: LFPQ is a validated software that assesses food preferences. Participants are presented with food items. Participants have to indicate "How pleasant would it be to experience a mouthful of this food now?". Then, they are presented with two food items, and they have to decide which of those items they would prefer to eat now. This questionnaire is filled by participants in the in-person subgroup only. Change = (Week 14 Results - Baseline Results)
• Changes from Week 14 in Food Preference on the Leeds Food Preference Questionnaire (LFPQ) at Week 26 [Week 14 and Week 26]: LFPQ is a validated software that assesses food preferences. Participants are presented with food items. Participants have to indicate "How pleasant would it be to experience a mouthful of this food now?". Then, they are presented with two food items, and they have to decide which of those items they would prefer to eat now. This questionnaire is filled by participants in the in-person subgroup only. Change = (Week 26 Results - Week 14 Results)
• Changes from Baseline in Brain Responses Following Smell Stimulations at Week 14 [Baseline and Week 14]: Brain responses to smell stimulations an olfactometer will be recorded by an electroencephalogram. * The olfactometer is a device that gently blows different odors into the participant's nose at specific time intervals. * The electroencephalogram is a non-invasive device that records the electrical activity of the participant's brain. Electrical sensors are placed on helmet-like equipment that the participant wears while he/she smells or tastes samples. The brain activity is measured; smell event-related potentials (latency, duration, and amplitude) using an electroencephalogram are obtained. This procedure is done by participants in the in-person subgroup only. Change = (Baseline Results - Week 14 Results)
• Changes from Baseline in Brain Responses Following Taste Stimulations at Week 14 [Baseline and Week 14]: Brain responses to taste stimulations using a gustometer will be recorded by an electroencephalogram. * The gustometer is a device that puts drops of different flavors on the participant's tongue at specific time intervals. * The electroencephalogram is a non-invasive device that records the electrical activity of the participant's brain. Electrical sensors are placed on helmet-like equipment that the participant wears while he/she smells or tastes samples. The brain activity is measured; taste event-related potentials (latency, duration, and amplitude) using an electroencephalogram are obtained. This procedure is done by participants in the in-person subgroup only. Change = (Baseline Results - Week 14 Results)
• Changes from Week 14 in Brain Responses Following Smell Stimulations at Week 26 [Week 14 and Week 26]: Brain responses to smell stimulations using an olfactometer will be recorded by an electroencephalogram. * The olfactometer is a device that gently blows different odors into the participant's nose at specific time intervals. * The electroencephalogram is a non-invasive device that records the electrical activity of the participant's brain. Electrical sensors are placed on helmet-like equipment that the participant wears while he/she smells or tastes samples. The brain activity is measured; smell event-related potentials (latency, duration, and amplitude) using an electroencephalogram are obtained. This procedure is done by participants in the in-person subgroup only. Change = (Week 26 Results - Week 14 Results)
• Changes from Week 14 in Brain Responses Following Taste Stimulations at Week 26 [Week 14 and Week 26]: Brain responses to taste stimulations using a gustometer will be recorded by an electroencephalogram. * The gustometer is a device that puts drops of different flavors on the participant's tongue at specific time intervals. * The electroencephalogram is a non-invasive device that records the electrical activity of the participant's brain. Electrical sensors are placed on helmet-like equipment that the participant wears while he/she smells or tastes samples. The brain activity is measured; taste event-related potentials (latency, duration, and amplitude) using an electroencephalogram are obtained. This procedure is done by participants in the in-person subgroup only. Change = (Week 26 Results - Week 14 Results)
• Changes from Baseline in food intake on the four 24-hour dietary recall at Week 14 [Baseline and Week 14]: Validated web-based 24-hour dietary recalls assess the food intake of the participant over the past 24 hours. Participant reports what they have eaten over 24-hours, meal by meal. They are presented with different portion sizes from which they have to select the one corresponding to each food item. This will be completed on four different days within the week following the laboratory visit. Then, calories and macronutrients are calculated. These questionnaires are filled by participants in the in-person subgroup only. Change = (Week 14 Results - Baseline Results)
• Changes from Week 14 in food intake on the four 24-hour dietary recall at Week 26 [Week 14 and Week 26]: Validated web-based 24-hour dietary recalls assess the food intake of the participant over the past 24 hours. Participant reports what they have eaten over 24-hours, meal by meal. They are presented with different portion sizes from which they have to select the one corresponding to each food item. This will be completed on four different days within the week following the laboratory visit. Then, calories and macronutrients are calculated. These questionnaires are filled by participants in the in-person subgroup only. Change = (Week 26 Results - Week 14 Results)

Secondary outcomes

• Change from Baseline in physical activity level on the International Physical Activity Questionnaire (IPAQ) at week 14 [Baseline and Week 14]: IPAQ is a validated questionnaire. It assesses the physical activity level of participants over the past seven days. Based on the provided answer, a multiple of the estimated resting energy expenditure (METs) is calculated. Higher the METs value, the higher the physical activity level of the person. Change = (Week 14 Results - Baseline Results)
• Change from Week 14 in physical activity level on the International Physical Activity Questionnaire (IPAQ) at week 26 [Week 14 and Week 26]: IPAQ is a validated questionnaire. It assesses the physical activity level of participants over the past seven days. Based on the provided answer, a multiple of the estimated resting energy expenditure (METs) is calculated. Higher the METs value, the higher the physical activity level of the person. Change = (Week 26 Results - Week 14 Results)

Sex: All, ages: 18 Years to any

Inclusion Criteria:

* Be 18 years old and above
* Have had COVID-19 diagnosed by laboratory tests
* Have recovered from COVID-19
* Have persistent problems with your sense of smell and/or taste due to COVID-19 in the past 3 months or more (priority to participants with only this complication)
* Have access to a computer and internet connection and be able to download the Zoom application
* Have access to a smart phone ("texting" and Bluetooth)
* Live in Canada

Exclusion Criteria:

* Do 150 minutes or more of physical activity that makes you out of breath every week
* Have limitations related to a training aiming at improving the sense of smell
* Have physical limitations that may limit physical activity
* Be part of another study that may influence the current study