Tobacco flavor study seeks to understand Vapers' sense of smell and taste

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * CONSUMER USER: Current daily vapers of products containing nicotine * CONSUMER USER: No concurrent use of other tobacco products * CONSUMER USER: General good health * CONSUMER USER: No allergies * CONSUMER USER: No self-reported taste or smell deficits * CONSUMER USER: Not pregnant or lactating * CONSUMER USER: No medications known to interfere with taste/smell * CONSUMER USER: Passing scores on the Brief Smell Identification Test (B-SIT), phenylthiocarbamine (PTC) and 6-n-propylthiouracil (PROP) smell and taste tests * CONSUMER USER: No positive diagnosis of COVID-19 within 30 days * CONSUMER NONUSER: No use of tobacco or nicotine products in the last year * CONSUMER NONUSER: General good health * CONSUMER NONUSER: No allergies * CONSUMER NONUSER: No self-reported taste or smell deficits * CONSUMER NONUSER: Not pregnant or lactating * CONSUMER NONUSER: No medications known to interfere with taste/smell * CONSUMER NONUSER: Passing scores on the Brief Smell Identification Test (B-SIT), phenylthiocarbamine (PTC) and 6-n-propylthiouracil (PROP) smell and taste tests * CONSUMER NONUSER: No positive diagnosis of COVID-19 within 30 days Exclusion Criteria: * CONSUMER USER: Outside age range * CONSUMER USER: Not current daily vapers * CONSUMER USER: Concurrent use of other tobacco products * CONSUMER USER: Fair or poor general health * CONSUMER USER: Allergies * CONSUMER USER: Self-reported taste or smell deficits * CONSUMER USER: Pregnant or lactating * CONSUMER USER: Medications known to interfere with taste/smell * CONSUMER USER: Failing scores on the Brief Smell Identification Test (B-SIT), phenylthiocarbamine (PTC) and 6-n-propylthiouracil (PROP) smell and taste tests * CONSUMER USER: Positive diagnosis of COVID-19 within 30 days * CONSUMER NONUSER: Outside age range * CONSUMER NONUSER: Use of tobacco or nicotine products in the last year * CONSUMER NONUSER: Fair or poor general health * CONSUMER NONUSER: Allergies * CONSUMER NONUSER: Self-reported taste or smell deficits * CONSUMER NONUSER: Pregnant or lactating * CONSUMER NONUSER: Medications known to interfere with taste/smell * CONSUMER NONUSER: Failing scores on the Brief Smell Identification Test (B-SIT), phenylthiocarbamine (PTC) and 6-n-propylthiouracil (PROP) smell and taste tests * CONSUMER NONUSER: Positive diagnosis of COVID-19 within 30 days