37 weeks pregnant and craving the smell of rubber does this mean i'm deficient in something if so what?

[Ledodgy]

Title says it all really i've never had any non- food cravings in my other two pregnancies but this week in this pregnancy I can't get enough of the smell of rubber and i'm even tempted to steal one of ds's dummies to suck/bite on. Do you reckon i'm deficient in some important vitamin or just a bit strange? I was in Wickes DIY today and couldn't get enough of the aisle which had some kind of rubber tubing on, i'm starting to get funny looks!

If you are obsessed with the smell of rubber or tar, then you have an iron deficiency low iron , although rubber does have a nice aroma but if you want to taste it and are obsessed with smelling it you are iron deficient .