As they say, the dose makes the poison. So far, I don't see any evidence that exhaled e-cigarette vapor contains more than a trivial amount of nicotine. That nicotine could be a hazard for the user, but as far as I can tell you'd have a hell of a time getting a significant dose from passive vaping.
If you're looking to avoid even trace amounts of nicotine, staying away from smokers isn't enough. You should probably avoid eating anything in the nightshade family (e.g. eggplant, tomatoes, potatoes, and peppers). It's worth noting these foods contain other toxic alkaloids in low doses too—other parts of the plants with higher concentrations are inedible.
The relevant question here is this: is exhaled vapor from nearby e-cigarette users a significant health risk? How does it compare to other environmental hazards?
If you're looking to avoid even trace amounts of nicotine, staying away from smokers isn't enough. You should probably avoid eating anything in the nightshade family (e.g. eggplant, tomatoes, potatoes, and peppers). It's worth noting these foods contain other toxic alkaloids in low doses too—other parts of the plants with higher concentrations are inedible.
The relevant question here is this: is exhaled vapor from nearby e-cigarette users a significant health risk? How does it compare to other environmental hazards?