This is more of a re-purposing of an existing item with a very small modification. I was looking for months for a small portable fog machine. I needed smoke effects for photo shoots, cosplay and so on. The key here is I don't smoke - or inhale. I wanted a vape that would work well when blowing out - and not all do. Details are in the video.
You want vape juice designed for "cloud chasing" (lost of smoke volume) - this is also much higher in Vegetable Glycerin (VG) than Propylene Glycol (PG.) Of course you also want 0 nicotine, and to pick a flavor that's sweet - I usually use "Cotton Candy" or similar. People around you will smell the smoke, so sweet is better.
Step 1: How to Use It
I chose this model vape because it's compact, is an economical "cloud chasing" / high volume vape, and has customization settings. I have fogged up small rooms quickly. Plus I've tested it with the tubes. I use the Oxygen feed tubes from home oxygen therapy suppliers - also on Amazon and eBay. Really inexpensive. One 20 foot hose will go a long way and have two ends for biting down on.
The video has full details and examples. I love the effect you can get with gas masks and Halloween mask. I'll run a longer tube from the mask down into my pocket where I'll have the vape.
I've put this vape 20 feet away and blown through the hose for some amazing effects.
Smok R Steam 80 Nano, sub-ohm vape - around $40-50 - shop around
18650 battery (not all will work!)