"Thanks, I just have bad timing I guess" is what Shiki wants to see, but an effort to clear her throat involves a- struggle to swallow, so instead Etienne just gets an odd baffled look, and a couple flinches for his trouble.

What-

In the end she just puts up a hand, motioning 'wait a second' as she tries, and makes a questioning point to the egg he's holding as she does.