I tend to avoid people like you, do your thing, but stay away. If someone wants to turn down a gig because they want to stand up for what they believe in, great! However if someone wants to turn down a gig because something "tweaks" them, then they are not a team player. I understand you are concerned about your health, but there are a lot of other things in life that will slowly kill you and we are all exposed to them every day. Not being a team player is a deal breaker to me, 1st world problems IMO.