Dd is 2.9yo and we tried potty training 2 months ago. Dh was really stressy about it because he was paranoid about her weeing on the sofa. She picked up on this and ended up holding her wee in all day because she was worried about going.
We went back to nappies as it was all getting too stressful but we need to try again at some point.
I have managed to get dh to understand that she WILL wee on the sofa and he is just about coming round to it. However I have no idea how he's going to deal with the poo.
The other day he was changing a dirty nappy and just as he'd finished and dd rolled off the changing mat and onto our bed, he spotted a minuscule speck of poo on the back of her thigh. He told her to stay still as he needed to give her another wipe but she started to try to crawl back onto the mat. He started shouting at her to stay still as he didn't want her to get poo on the bed and she started to cry 
I have tried explaining to him the problems that might happen if we give her issues about poo and if she starts withholding but he just can't see past the mess. I know he just needs to chill out a bit but it's just his nature.
I don't know how to get around this.