Apologies if I've already started a similar thread - I tried to about 5 minutes ago - but for some reason it doesn't appear to have come up... 
Anyway, we ran out of our normal dishwasher tabs, and DH, trying to be helpful, saw my little packet of dishwasher cleaning tabs (i.e. the ones you run through an empty cycle to clean the dishwasher/get rid of limescale etc), and thinking it was a promo pack of normal dishwasher tabs, put one in with all our dishes/pans/cutlery etc.
I only realised when I came into the kitchen with the machine on mid-cycle and realised that the smell coming out of the machine was a dishwasher cleaning tab smell.
Now I'm worried about whether it will be safe to use the dishes in the dishwasher again now they've been washed with that stuff. Am freaking out a bit.
Thanks for any thoughts