Hi Marina, I can't remember, but even if it was - rug and carpet can be interchangeable in English, so 'carpet' covers all possibilities.

Sorry, I thought "carpet" was "moquette". The "tapis" used to belong to her grandmother if I remember well.

But, without the comma, otherwise the sentence becomes rather disjointed - or 'in the bedroom' becomes an afterthought.
I think Fréderic is speaking about a specific bedroom rug, or of the carpet.
In fact I am thinking that 'carpet' wouldn't be a better translation, because he is worried that she will vomit in the bedroom and ruin the carpet.
I would suggest 'And be careful of the carpet in the bedroom . . . Vanessa goes out.

Thank you.

Suggestion Marina - And be careful of the rug in the bedroom . . . Vanessa goes out.