Take this one puff as a lesson and learn from it.
I'm 13 and I smoked a cigarette today (1 puff). I've been up all night scared that Ima get really sick or get really addicted. Help?
Your sick stop smoking cigs only older people can smile
Now that you've done it, you can check smoking off your bucket list and move on. NOTHING good can come of smoking more.
One puff won't hurt you, unless you are allergic to it, which apparently you aren't. The thing with one puff is when it leads to two, the three, then three million. That is when the problems with health and addiction are a real issue. Not to mention finding a job. Did you know smokers generally get paid less than their non-smoking counterparts? They are also less likely to get a promotion? So from here on out if anyone tries to get you to smoke again, simply say you tried it, and you don't like it. And why should you do anything you don't like?
I don't think you're going to get addicted from one puff, but don't do it anymore man. I'm 13 too and I'm not interested in smoking at all. It seems gross anyway.