I have the right to go about my business without suffering harm from someone else. When you smoke near me, you are causing me harm. If you want to harm yourself, be my guest, but don't do it where you include me.
I also don't want my eardrums damaged from you playing loud music next to me. Do it in your house where I can't hear it.
And for goodness sake, don't run around with those scissors. You might put my eye out.
