Ugh, milk spilt in buggy seat <vom>

[EyeballsintheSky]

Took the buggy seat out of the car when we went on holiday (in the car). Went to put it back in last night and discovered the missing bottle I had been hunting for. Unfortunately the lid was off and it had split 2 week old formula over the seat and it stinks. Hopefully I can bung the footmuff in the washing machine but it had also spilt on the padded bit that goes over the between the legs part of the harness and that doesn't come off the buggy.

Any ideas how I can get rid of the smell? I can't put poor DD in it as it is.

TIA

[sazm]

does the seat unit cover not come off to go in the washing machine too?