The Medway Handyman wrote:
Hi

Our dishwasher is connected to the sink waste above the trap as per
normal. I can see the logic in this, as the trap prevents drain
smells getting to the dishwasher.

However, last week SWIMBO had poached haddock for dinner - and I
can't abide the taste or smell of fish.

When the dish & plate were put in the dishwasher, every rinse cycle
resulted in a horrid fishy pong coming up from the sink waste.

Any way round this apart from a separate waste?

Yes, wash that dish in the sink first.

--
Sir Benjamin Middlethwaite