Weird working light and foul odor

This just started tonight. The light in the bathroom just started acting weird, blinking on & off. Could be a glitch with it somehow, but worth mentioning. Also while I was getting things from our bedroom I noticed a foul odor, like someone passed gas with a little sulfur like smell to it. This stayed in the room for awhile and when going downstairs the smell went along down, but did not stay around as long.Karen & Brittany also took notice to this. I got them for confirmation to what I was experiencing.