A report in the Consumerist said that Apple is refusing to honor warranties on machines in houses where people smoke.
The report quotes two readers that were told their warranties were void because computers were used in a house where people smoked.
The reason? Cigarette smoke is considered a biohazard and employees repairing machines that were exposed to dangerous substances were put at risk.
The Occupational Safety and Health Administration (OSHA) mentions a number of other hazardous substances including calcium carbonate, sucrose, and talcum powder.
One Mac user had an extended Applecare warranty in place and was told that his broken computer couldn't be fixed because it was contaminated.
But, as the Consumeristpoints out, Applecare warranties don't appear to mention that cigarette smoke will void Mac warranties.
The Centers for Disease Control and Prevention said that 43.4 million US adults smoked in 2007 - the most recent figures available. That's nearly 20 percent of all adults.