Hi everyone, ok so I know to be careful with some oils during pregnancy although don't have a clue which ones & why! So my question is for eucalyptus & tea tree oil as having our ducted heating all cleaned & sanitised before peanut comes (the things you do when crazy nesting!) A 10 to 1 part mix is being used to sanitize & has eucalyptus & tea tree in it with other stuff?? Should I be worried/cautious.... I have no idea!! They said it'll heaver a slight smell for about 5 mins when first turned on so was thinking of opening windows & doors etc for a bit?? Thoughts anyone out there....... Thanks :-)