I probably did at some point
We test each purifier at least twice
doi:10.1377/hlthaff.24.6.1601
Dampen a clean dishcloth in a bowl of vinegar, wring it out thoroughly, then wave it around in the area where the smoking smells are worst
Storing batteries at full charge or completely depleted states can cause capacity loss over time

Original Mond Cigarette: Holographic GTI tax stamp on every pack crisp, clear, and tamper-evident Consistent, sharp pack printing with no ink bleeding or colour mismatch Firm, well-constructed filter that does not crush easily Authentic flavour on first draw rich, clean, and aromatic Correct barcode that scans to a valid GTI product listing Pack seal is tight and undamaged with no loose tobacco Purchased from authorised retailers or verified online stores Fake / Counterfeit Mond: Missing or poorly reproduced holographic tax stamp Blurry or faded print inconsistent font weight on pack branding Soft, loose, or poorly made filter that collapses on grip Weak, artificial, or chemically off-taste on inhale Barcode either missing, unreadable, or scanning to no result Loose pack seal, tobacco dust inside the cellophane wrapper Sold at suspiciously low prices below market rate Always buy Mond Cigarette from trusted sources