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SB 390

Revise definitions in Clean Indoor Air Act

2025 Regular Session Introduced by Willis Curdy

Montana SB 390 revises Clean Indoor Air Act definitions to clarify smoking regulations in public spaces and workplaces, now law after gubernatorial approval.

Chapter Number Assigned
#buildingsandbuildingregulations #health
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Bill Summary · SB 390

Legislative bill overview

SB 390 revises the definitions used in Montana's Clean Indoor Air Act, which regulates smoking in public spaces and workplaces. The bill has passed both chambers and been signed by the governor as of May 2025. The specific definitional changes are not detailed in the provided information, but such revisions typically clarify what constitutes indoor air spaces, smoking products, or public venues covered by the law.

Why is this important

Definitional changes in air quality legislation can significantly affect which businesses, facilities, and products fall under regulatory requirements. Clear definitions determine compliance obligations, enforcement scope, and how broadly or narrowly protections apply—impacting public health outcomes, business operations, and regulatory consistency across the state.

Potential points of contention

  • Scope of coverage: Changes in how "indoor air" or "public spaces" are defined could expand or contract which venues must enforce smoking restrictions, affecting small businesses differently than large establishments
  • Product classification: If definitions of "smoking products" are revised, this could include or exclude e-cigarettes, vaping devices, or other emerging nicotine products, affecting different industries and user groups
  • Enforcement clarity: Revised definitions may create ambiguity about which spaces are covered, potentially leading to inconsistent enforcement or disputes between businesses and health departments

Compiled from official sources — confirm details with the bill’s official record.

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