I can suspect vaping when I see yellow or brown stains on your teeth because nicotine creates yellow or brown stains on teeth when it mixes with saliva. When teeth are exposed to the aerosols in a Does Vaping Affect Your Teeth Color? The Truth About Vaping's Effect on Your Gums Does Vaping Stain Your Teeth? Ancaster Smoking & Vaping: What They Do to Your Smile Think it's harmless? Think again. Smoking and vaping slowly damage your teeth and gums often without pain at first. Weakens E Cigs and Oral Health Zak Dental Family Dentistry, Cosmetic Dentistry