Could anyone please let me know sentence below sounds correct when you want to inform someone who has eaten something like garlic and his/her bad breath makes you feel really uncomfortable:

Sorry Hardy, but.....
a. your breath smells of garlic.
b. your breath stinks of garlic.
c. your breath reeks of garlic.

To me, 'a' sounds awkward, while 'b' and 'c' both seem to be correct, though, 'c' is the strongest one (due to the prosody of the verb "reek") and I guess it would be quite offensive to tell anyone. Please make me aware regarding these three sentences and their shades of meaning.