Clinical Research Directory

Inclusion Criteria Adults 18 years of age or older Able to understand and speak English sufficiently to complete cognitive testing Able and willing to complete two consecutive study sessions lasting approximately 6 hours each Able to avoid cooking, toasting, and fume-generating household activities (e.g., strong cleaning products, ironing, hair drying) for 24 hours before each session Able to avoid tobacco, marijuana, vaping, and alcohol use as specified in the study protocol Able to provide informed consent Exclusion Criteria Younger than 18 years old Pregnant or planning pregnancy during study participation Current smoking or use of: Cigarettes E-cigarettes or vaping devices Marijuana Shisha/hookah Binge drinking, heavy alcohol use, or inability to abstain from alcohol for 24 hours before study visits Restaurant chefs or individuals who perform frequent commercial-level cooking Individuals who cook two or more frying or grilling meals per day at home Cooking anxiety or mageirocophobia Any diagnosed neurological disease, including stroke, seizure disorder, multiple sclerosis, traumatic brain injury, dementia, or similar conditions Any significant respiratory disease, including: Chronic obstructive pulmonary disease (COPD) Untreated severe asthma Chronic bronchitis or other major lung disease Any significant psychiatric condition, including: Schizophrenia spectrum disorder Untreated substance use disorder Severe mood disorder Severe anxiety disorder Claustrophobia or anxiety in enclosed spaces (if severe enough to interfere with chamber procedures) Inability to comply with study procedures or safety requirements Any medical or psychological condition that, in the judgement of the investigators, may increase risk or interfere with study participation