Is Exposure To Plastic Fumes During Pregnancy Harmful To The Baby By Any Chance?

Question : Hi ,I am 20 week pregnant and I used specific blade for cooker and blade cover is plastic and blade wen5 back and cooker was on and little bit melted,i inhalated 2~3 times after i opend some windows and went out from room,after 5 mins i went back and there was no smell. some weeks ago husband burnt a littlebit an pot holder and i realised the smell and i went out,and he told me there was no smoke just smell.(there was some plastick in it too :( ) it could be harmful for my baby? need to worry and go some check up? And the bonus is ,after that i realised my husband put teflon pan coverd in bubble foil some cm above from radiator (3~4 cm) and it was warm because it was worked on maximum. he put it in december and today a put from there. and this fumes can harmful us or my babay. i know we are horrible but i try to be perfect but i am crying because this things are happen every time and really scared we harmed iur baby. thanks a lot

thank you, and this other from december until now near to radiator (3~4cm) is no problem ( we did not feel any smell)? just because bubble foil is really soft,but it was just little heated up not any melt. thank you again