Someone else turned blue. Other people... I don't know what happened to them exactly, but. They stayed away for a long time. They didn't come to dinner at the Invincible, and-- and that says something? I don't know what but it's not something as stupid and harmless as pink bubbles.

[That the pink bubbles came around the same time as Quentin freaking out about Eliot dying, was probably also a part of why they had felt less harmless than it sounds. There's really nothing like screaming out your hurt and grief, only to watch the pink bubbles float away on the wind.]

Dr Ingram made other people ask for him. Because something happened to him the first time. Maybe you should ask him before making deals with the vendors?