Smart Olfaction App to Reduce Relapse

Inclusion Criteria:

* At least 18 years of age
* Ability to read, understand and speak English
* Currently smoke at least 5 cigarettes daily for one year or longer
* Do not currently smoke marijuana or currently smoke marijuana but willing to not smoke during the duration of the study
* Did not use electronic cigarette or vaping device in the past 90 days
* Have an active smartphone that is Apple or Android based
* Have phone service including a data plan
* Interested in downloading the study app onto their personal phone
* Motivated to quit smoking
* English literacy of 7th grade or higher, as indicated by a score of ≥ 4 on the Rapid Estimate of Adult Literacy in Medicine-Short Form (REALM-SF)
* Biochemical verification of smoking status
* Proof of smoking status at enrollment via photo of cigarettes
* Presents a photo ID that matches the information on screener survey
* Willing and able to complete study procedures
* Willing to use NRT and quit smoking for 14 days (Phase I) or willing to use NRT and quit smoking for 13 weeks (Phase II)

Exclusion Criteria:

* Olfactory dysfunction including inability to smell, a very weak or distorted sense of smell, or sensitivity to odors
* Report any allergies or negative reactions to odors/fragranced products
* Being pregnant, breastfeeding, or planning to become pregnant within the next month
* Report hypertension that is not under control
* Have had a heart attack within the past two weeks
* Those who participated in Phase I will not be eligible to participate in Phase II
* Have a smartphone that is not compatible with the Insight mHealth platform
* Report using electronic cigarette or vaping device in the past 90 days