Sensory Perception of Sweet Flavors in E-Cigarette

We will recruit current, healthy e-cigarette users between the ages of 18-29.This study will
require 1 visit to the Oregon State University campus to partake in a 1 hour (approximate)
testing session. During the testing session, participants will be asked to puff commercial
e-cigarettes containing 9 commercially available e-liquid preparations.

Inclusion Criteria:

- Healthy adults between 18-29 years of age; have been vaping for at least 1 month;
currently use an e-cigarette that contains nicotine; have used an e-cigarette with
medium (9-12 mg/mL) or high (18 to 36 mg/mL) nicotine strength at some point in their
e-cigarette using history.

Exclusion Criteria:

- Do not have mouth or throat problems that would keep subject from vaping comfortably;
do not have health problems that would keep subject from tasting or smelling normally;
do not have any food ingredient allergies and have never had an allergic reaction to
propylene glycol or vegetable glycerin; do not have any respiratory allergies (i.e.,
frequent sneezing, nasal congestion, nasal discharge); do not have a history of
pulmonary disease or asthma; are not in the process of trying to quit vaping; are not
pregnant, breast feeding, or trying to become pregnant.