The Forgetting Sarah Marshall star accidentally deployed a stink bomb at her family's Christmas celebrations.
Bell and her fiance, Dax Shephard, were on a road trip over the festive season, and stopped at a petrol station to pick up some small gifts whilst on their way to visit Shephard's family in Oregon.
She purchased some stink bombs as a gag for an upcoming party, but it backfired on her when one activated itself in her handbag, causing a stink at the family get together.
Speaking about the incident, she said: "We got to Oregon and three days into being there our furnace broke, at Dax's parents' house. So his stepdad was trying to fix the furnace for like three days and then we're all sitting around the Christmas tree and we hear something, and the whole house starts to smell like sulphur. We got really nervous and everybody was walking around the vents because we assume it's the furnace, obviously, and we bring the neighbours over and everybody is walking around the house trying to figure out if the furnace is on fire.'
"I'm walking around the house with my handbag, accusing everybody of where the smell's coming from, barking orders - cut to a nice plume of green smoke coming out of my handbag, one of them had activated itself. It really ruins Christmas. It lingered for a bit. It's not a great smell," she continued.
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