Judging by the different color tones of "no smoking" and "safety first", i would say "no smoking" was already there, before they decided to get more verbose with "safety first".

They were forced, by the circumstances, to write it like this.

Snoop Dogg got his ship master’s license I see.

hoho meme

Now on !nosafetysmokingfirst@sh.itjust.works

This reads correctly, doesn't it? There's a big gap between the words, but they're in the right order.

No Safety, Smoking First!