Horrible smell and noise coming from workers? (3)
I believe the answer is:
hum
This could be a double definition.
'horrible smell' is the first definition.
(hum can mean a disgusting smell)
'noise coming from workers?' is the second definition.
'hum' can be an answer for 'noise' (humming is a kind of noising). I'm unsure of the 'coming from workers?' bit.
'and' acts as a link.
Can you help me to learn more?
(Other definitions for hum that I've seen before include "Reek" , "Make musical sound with closed lips" , "Sound of busy activity" , "Pong" , "Murmur" .)