Sticky Dust Accumulation: The tar and nicotine in cigarette smoke leave a sticky, amber-colored residue on everything they touch. Over years of heavy indoor smoking, this residue coats the wiring inside walls and ceilings. It acts as a magnet for airborne dust, hair, and debris.
Degradation: While the wiring itself is metallic, the outer chemical film can slowly degrade or weaken specific types of plastic and rubber insulation over decades, increasing the risk of brittle wiring
Electronics and Vents: If any wiring connects to rooftop extraction fans, HVAC controls, or open junction boxes, the sticky buildup can clog moving parts, coat electrical contacts, and trap heat, which may lead to shorts or system breakdowns
Surface Corrosion: Nicotine smoke contains hundreds of chemical compounds that can settle on exposed plumbing lines (such as copper or PEX pipes) in utility closets, basements, or under sinks. Over an extended period, the chemical deposition can cause surface corrosion or discoloration on metal plumbing fixtures and valves.