What does a cigarette and a hamster have in common?
Both are completely harmless until you put it in your mouth and light it on fire.
Listen up, genius! You're comparing a cigarette and a hamster. Get it? Normally, a hamster is harmless, right? But if you light it on fire, it's gonna be a bad time. Same with the cigarette, until you light it, it is harmless. Light makes them harmful! Now go back to drooling.