Most who vape claim that it doesn’t have much of an odor, but, you really can’t trust your own senses after a few tokes because your nose will have gotten used to any smell by then. Quite a few non-vapers don’t notice a thing even when they walk into an enclosed area seconds after you exhale, then again, others will smell something and just not realize what it is.
If you’re in a position where the smell of vapor is a concern, a few simple precautions can help you avoid any problems. If you’ve a window, open it, and if you’ve a fan, turn it on. The smell of vaping may be less intense than smoking, but it’s still part of the atmosphere until it’s had a chance to disperse. Vapor odor has a lot to do with the ingredients of the e-liquid itself. Example: Propylene Glycol (PG) mixes leave a stronger smell than those using a Vegetable Glycerin (VG), so when being discrete is a must, be careful when choosing your supplies. If you enjoy the taste of fresh foods, try a berry flavor. The only thing anyone is going to smell then will be something fruity, and delicious.
Yes, vapor does leave a trail under certain circumstances but it generally disappears in moments so this isn’t really an issue for most vapers. We’ve all seen airplanes with streamers of cloud (known as contrails) following them, and though the reasons a vaporizer can leave a trail of its own follow the same logic, choose your location wisely, and it should never be a problem. Cold, clear air promotes vapor trails, and when humidity is high, they tend to hang around longer than you might think if there’s no breeze to disperse it.
When you get right down to it, vaping is obviously a better choice than smoking, and choosing not to vape because of worrying about leaving a scent, or vapor trail isn’t doing you any favors. Whether discretion is a must or not, adapting vaping habits to your surroundings is easier than you think, plus a much better option than polluting your body with smoking and trashy carcinogens.