"Donald Smells" is actually a better fit than "Donald Trump smells" and is probably clear enough with the context of th rest of the song. You could easily include a line about how "Trump" is longstanding British slang for "fart" though and then you get both names in.
I recommend that you try to improve the world with correction instead of (only) criticism. See something misspelled? Post the correct spelling! See some syllables that are off? Fix 'em so that others don't get it wrong!