Smokebuddy: 煙霧過濾器（手榴彈）

I've been using this as a discreet way to keep my room fresh, and the carbon filter inside really does eliminate the smell completely. The grenade shape makes it easy to grip while exhaling, and I'm surprised at how long it lasts before needing a replacement.

The grenade shape fits my hand perfectly, and one exhale through it leaves literally zero lingering scent in my apartment. My roommate hasn’t complained once since I started using it, and that alone was worth the price. I was skeptical about how well a tiny filter could work, but the airflow is smo

Finally, I can smoke inside without setting off the smoke alarm. The filter really does its job—exhale through it and there's zero smell, just clean air coming out the other side. It's small enough to toss in my pocket too.