Butane is a highly flammable solvent and many an amateur has set himself on fire when evaporating the excess solvent
Battery-powered wheelchairs and mobility devices are the only medical items specifically prohibited by the TSA, but you can check them
It's possible it blew when you reconnected the battery if a wire touched metal by mistake
Stains and calculus over teeth is very much common in tobacco chewing
First Nations Health Authority (FNHA)
Once in the home, the smoke is absorbed into the environment, for example, into the furniture or walls or rugs, and is then gradually discharged into the air over weeks or months." "Further, this residual smoke, known as third hand smoke, can be absorbed into the body from the environment via swallowing or through the skin, especially among infants and small children