Street vendor one clearing throat? (6)
I believe the answer is:
hawker
This clue is a double definition.
'street vendor' is the first definition.
(someone hawking products)
'one clearing throat?' is the second definition.
(hawk can mean to noisily clear one's throat)
(Other definitions for hawker that I've seen before include "One who sells from door to door" , "Travelling salesman and trader" , "He sells from door-to-door" , "Chapman" , "Pedlar" .)