Maternal grandmother taking in Italy's foul atmosphere (6)
I believe the answer is:
miasma
'foul atmosphere' is the definition.
(I've seen this in another clue)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for miasma that I've seen before include "Unpleasant atmosphere" , "Pollution in the atmosphere" , "Noxious atmosphere" , "Unpleasant vapour or influence" , "Stench" .)