I feel a purge of the store cupboard coming on. Some of those bottles have been there for years.You should definitely refrigerate sesame oil once opened, as it tends to go rancid fairly quickly otherwise. We always kept walnut oil in fridge as well since walnuts themselves get stale and rancid fairly quickly. Grapeseed oil is in pantry, though we don't use it much.
We have a container of purchased duck fat that is kept in deep freeze. Ghee is good for a couple of months at least in fridge. When I have coconut oil, kept that in fridge as well since it doesn't get used quickly. Peanut and vege oil are kept in relatively cool dark cabinet. Crisco is kept in pantry. Chili oil is also kept in fridge. I make our truffle oil with ends of truffles when we have them, so keep that in freezer. I also make truffle butter that is also kept in freezer.
Don't use canola/rapeseed oil as they have a funky taste to Craig.
No, we've noticed a fishy odour or taste either....and if there was one then hubby would definitely notice because he doesn't eat fish and can't stand even the faintest fishy smellMaybe different here? Pure rapeseed is what I usually use for frying. I've not detected a fishy characteristic.