For effective allergen and smoke control, you want 4.8-5 ACH minimum
In fact, the two companies ties go back much further
The ACS warns against programs that promise instant or easy success with no effort on your part, those that rely on injections or pills (especially those containing secret ingredients), those that charge very high fees (check with the Better Business Bureau if you have doubts), and those that refuse to provide references from people who have participated
The G4 Pro is for the person who likes the idea of a pod kit, but wants it to feel more premium and more interactive
HEPA filters capture the visible particulate matter in smoke, but the gaseous chemicals and persistent odors pass right through
It is frankly unlikely that this argument fits at all for vaping (aerosol delivery of nicotine in a humectant, without the carbon monoxide, over 4.000 chemicals and the extreme levels of harm from the over 60 known human carcinogens in deadly smoke) or smokeless tobacco, especially the low nitrosamine forms produced in Swedish type snus