Yeah it is very stealthy. No odor just a hint of burned cotton candy or pop corn as per my wife who is not a hobbyist as I am.

Only thing is the iolite has a thermostat which keeps your stuff at a constant 190C--so every once in a while it fires up which makes a whooshing or hissing sound.

If I am walking around Walmart or Shoprite the surrounding noises cover up the sound of the iolite with ease.

Once I was waiting in Jiffy Lube for my car to be ready busily sipping away when it fired up but the customer waiting area was so quiet with 2 other people so I just went into the bathroom and turned it off.

I am looking to re engineer my device to muffle the sound which is not loud at all but could raise eyebrows in quiet places like libraries etc.