Story at-a-glance Scented wax melts release terpenes that interact with ozone to create harmful nanoparticles, despite being marketed as safer alternatives to candles Studies show wax warmers emit up to 1,000 times more terpenes than candles, significantly degrading indoor air quality Everyday scented products create nanoparticles that reach deep into lungs, with pollution levels comparable to gas stoves or diesel engines Health risks from these invisible particles include respiratory irritation and long-term breathing problems from regular exposure Simple solutions include opening windows frequently, choosing unscented products, using natural alternatives and installing proper air filtration systems