How to disguise nausea?

Hi ladies! I'm hoping some of you might have some advice for me 😊 pregnancy nausea has finally hit me today, and I feel gross. Under normal circumstances I'd just power through. The problem is that my friend is traveling to see me and she wants to go out to eat tonight. The thought of restaurant food - even just the thought of sitting in a restaurant surrounded by the smells - makes me want to puke. At the same time, my wonderful MIL is coming to visit. I don't want anyone to know that I'm pregnant yet - I'm 6+0 wks, waaaaaay too early. Have any of you had experience with disguising nausea? How do I get through tonight?