Would you say more about the connection between black snot and ICE taxis? The reason I ask is that I was under the impression people commonly get black snot fr

Would you say more about the connection between black snot and ICE taxis? The reason I ask is that I was under the impression people commonly get black snot from the the tube (eg. https://www.reddit.com/r/london/comments/16jjgt/london_why_do_i_have_black_snot_when_i_visit_you/ https://www.reddit.com/r/london/comments/16jjgt/london_why_d... ).