I always buy ones that are like this: https://www.amazon.com/gp/product/B09MW5BBF3/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1

They are super convenient, batteries or usb, almost no noise. They don't last forever though, so I always get the extended warranty and I always have a back up one with me.

Thanks for this, I’m definitely going to try it out. Did you use the hood method when you tested yours?

Also, is there any significant difference between a tiny mister like the one in the link and a larger nebulizer like this one in terms of being able to effectively perform the test?