It becomes abnormally inflamed, has pus, is abnormally tender, skin changes colors, or does anything that differs from its usual behavior without a direct cause like a tug, or just getting it pierced.
No but it can get infected.
A cut.
knock it down
Yes; it probably will. I am sorry.
it hurts and puss comes out
If you burn infected files onto an optical disc then those files remain infected and would remain on the optical disc permanently.
They burn chimicals to protect molecules from getting infected by energy.
Ask the doctor.
Yes, that is why they store infected grain and then burn them.
These "burn bubbles" are called blisters. It is recommended that you do not pop them. Let them heal naturally on their own. If you do pop them, you risk them becoming infected.
The best way to know if your new piercing is infected is by the visual appearance. If the piercing is red or inflamed, it may be infected. It also may be hot to the touch.
yes