CLEAN : Protesters transform Bangkok street into catwalk to mock monarchy

The transcript covers a brief conversation about job roles, mentions a chemical substance, and includes an apology for being busy, ending with a reference to nobody.

What job is being referred to in the dialogue?

What does the term 'Cyanide' refer to in this context?

What might the speaker mean by 'Sorry, I got busy'?

What does the response 'Nobody' imply in the conversation?

How do the responses reflect the speaker's attitude?