Getting smelly stain out of oilcoth bag?

[quaere]

Really annoyed about this. I accidentally left my lunchbox in my bag after work yesterday. This morning I find that the juice from the tuna salad has leaked onto the bag. It stinks. I like this bag, it's from Cath Kidston and I will be pissed off if it's ruined. Any suggestions. TIA

If you can't put it into really hot water with plenty of white vinegar try wiping with a micro cloth dipped in same solution.