Reducing Particulate Matter-associated Cardiovascular Health Effects for Seniors

Inclusion Criteria: * Nonsmoker * ≥60 years old * residing in Carpenter Place Apartments Exclusion Criteria: * Active cigarette smoker * daily secondhand smoke exposure (self-report) * any CV event (myocardial infarction, stroke, heart failure, revascularization) in the past 3 months * unstable CV condition or risk factor (uncontrolled diabetes, class 3-4 angina or heart failure) or any medical condition that would place the participant at risk from participation or jeopardize study integrity (per investigators) * expected overnight travel outside their apartment during the 14-week study period * unable to provide informed consent * lung disease requiring oxygen * renal dialysis * cancer receiving active treatment or chemotherapy * severe uncontrolled high BP ≥160/100 mm Hg or SBP\<115 mm Hg. * CV medication change in the prior month. If participants are on medications for high BP, diabetes, or a CV condition, they will need to have stable therapy during the prior month with no planned changes during the study period.