Can Doctors Tell If You Vape? You might think vaping is invisible but your doctor may spot the signs From breathing changes to nicotine testing, vaping can leave clues behind. Vape safety is important, don't blow it. Pack your vape safely for your next flight with these tips: Keep it with you in the cabin, not in checked bags. Do not use Turn it Off: A Patient's Advice about Oxygen and Smoking Does Vaping Increase Blood Pressure? What Science Really Says OrderVape Warning: Etomidate in Vapes Some vapes are laced with etomidate and other dangerous drugs. It can damage your brain, disrupt your heart function, and cause fatal breathing problems.