Non-toxic tooling gelcoat?

Is there any tooling gelcoats I can use for mold making that don’t produce any fumes or are at least low-toxic?

I used a normal polyester tooling gelcoat today and the fumes managed to get into my house. I even had the garage open with a fan pointing out and the garage window open. I didn’t think the fumes would get into my ventilation, which happened to be the cause.

Epoxy surface coats are odor free usually, you will also need to use epoxy resin to make the mould.