deja vu again

you mean like toxic micro-plastics found in almost all our food and almost everything else? I eat toxic micro-fibers for breakfast. No, but seriously, a good quality mask is a better bet than breathing the crappy air in Thailand oftentimes. Trust the technology, you know like you trust the vaxxes.

Nope, can't be that. Found one that can suck a golf ball through a garden hose.

I've had a Hatari air purifier also, no problems so far. The screen is really flimsy, but no big deal. The price was way lower than other brands. Try Pureburg (check Lazada) filters, they're excellent and 100 -150 baht cheaper. Btw, I turned my Hatari air purifier into an "air intake" by attaching a box (plywood) and a 6 inch flex hose to it, and then to a vent cap through a window. This way I bring in and pre-filter air from the outside, and thus force the stale air out through other door/window openings. This positive pressure in the room keeps dirty air from other openings from getting in, and, all my furniture and moldings, etc. don't collect dirt/soot that they once did. Depending on PM 2.5, pollen etc. I change the filter every 2 to 4 months.

BOI just replied to my question regarding whether I need to file a return with the TRD. I specifically noted the many conflicting interpretations in online forums regarding the "Royal Decree 743" and the "Notification of the Director-General of the Revenue Department Regarding Income Tax (No. 427)” in my question so they would account for this in their answer. (I'm a LTR WP) "Greetings from the LTR Visa Unit. The tax exemption benefit applies to income transferred from overseas into Thailand. Other asset types may not qualify. If you have no income source within Thailand and the income was transferred after obtaining the LTR Visa, you are exempt from tax and do not need to report annually to the Thai Revenue Department. A TIN (Tax Identification Number) is optional and not required if you have no income source in Thailand or if the income was transferred after holding the LTR Visa." ... and their subsequent reply to my request for further clarification: "Your income earned outside Thailand and not transferred into the country is not subject to taxation by the Thai Revenue Department. Therefore, you do not need to file a tax return for income sourced outside of Thailand." Cheers