Always be careful with hummous. I once ran an event where everyone who had the hummous sandwiches was violently ill. Keep in the fridge and throw out if opened 2 days
Why? Is there actually some sort of high-risk ingredient in hummus? Or was that just a one-off thing at your event?
Cos I keep hummus in the fridge opened for around a week and have been doing so for many years. Never been ill from it (as far as I know!)