I have a 4 month old DS and went out with a pregnant friend at the weekend. She mentioned that she's stopped wearing leather jackets, or any items of clothing that can't be washed in the machine, as she is concerned that if she spends any time around smokers the smoke will cling to the material but she won't be able to wash it, and she is worried about third hand smoke (afaik she doesn't have smoker friends... so I think this is just about walking past smokers outside pubs or restaurants etc). She seemed surprised that I wasn't following the same rule given my 4 month old.
Is this a reasonable concern for pregnant women / new mothers or is she already going too far?