Short answer: Yes, where a surcharge applies. ACA rules require the plan to offer a tobacco-cessation program and to waive or refund the surcharge for members who complete it. In states that ban tobacco rating, there’s no surcharge to begin with.
When a plan charges a tobacco surcharge, federal wellness rules require it to provide a reasonable alternative, a cessation program; that lets the member avoid the surcharge by participating, regardless of whether they actually quit. Completing the program removes the surcharge for the plan year. In the eight jurisdictions that prohibit tobacco rating, smokers and non-smokers already pay the same rate, so no cessation step is needed.
Sources
CMS, Market Rating Reformscms.gov/marketplace/private-health-insurance/market-rating-reformsKFF, tobacco surcharges in the Marketplace and state limitskff.org/faqs/faqs-health-insurance-marketplace-and-the-aca/marketplace-health-plans-and-premiums/can-i-be-charged-higher-premiums-in-the-marketplace-if-i-smoke