stankgasm
When you meet two contrasting smells, one pleasurable and one very awful simultaneously, often followed by an audible grumble or groan.
"The smell of the farmer's stables mixed with the old cheese shop indulged my senses in a most glorious stankgasm."
"The overwhelming aroma of the roses combined with the nearby cow manure as made me prematurely stankgasm."
"The overwhelming aroma of the roses combined with the nearby cow manure as made me prematurely stankgasm."