The same risks go along with nipple piercings as with any other piercing: bad placement, infection, rejection, etc. My only caveat would be to really consider if at the age of 18 that your body might not be done developing yet. You may want to wait a few years. I've had pierced nipples for over two decades now, and they do still develop a light crust of lymph fluid overnight.
(I've never had that smell however) It's primarily due to friction, and you can't do anything about it, so if that puts you off, then don't get them pierced, or you should give up those piercings if it bothers you.
Had both my nipples pierced when I was 18 also. The only problem I had was this discharge that still sticks around even to this day, which I've read about on the internet. I haven't had the piercings in for like 2 years, yet the discharge is still there.... I have to constantly clean them so there isn't a smell.
I know that seems totally gross, but if I would have known this would be the end result, I would have never done it. Some people probably never will experience the same problem, but others and myself have...
With 21 piercings already I would be surprised if you had any problems. Do you have your eyebrow pierced? I was told by the lady that did mine that piercings nearest to bone have the highest rejection rate.My friend had his eyebrow done three times, each time it grew slowly out.
One big error people make is that they change the piercing too quickly. Another error is that they go for a slightly smaller gauge when they put a new one in. Going smaller the body starts to try and heal, go for it, you only live once, if the body rejects it remove, heal and try again at a later date.
I can not understand what you do. Health is the most important thing for us. Any injection or such things have side-effects.
You are still yong and there is something more important for you to care about.
Worsed that could happen is probably infection, if you have 21 piercings you must like getting pierced, I can't understand why your worried about the nipple.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.