Has the inside of the bottle melted as well? If yes, then chuck it because chemicals can surely seep through and contaminate the milk. If no, there is a possibility that only the outer layer of the bottle is affected and since the milk is exposed to mainly the inner layer, the bottle might still be safe to use as MAM bottles are BPA-free. However, if it were me, I wouldn't take the risk. I'd also invest in a different brand of bottle. Alot of my friends use glass bottles because of the fear that these melting accidents might happen.
hmm.. I wouldn't use it if I were you. The plastic seemed melted. Not sure if any chemicals would be "released". Wouldn't want to risk it. :( How did this happened? Maybe you can try emailing (hello@mymambaby.com) the company to see if you could still exchange it if you have followed the cleaning instructions stated?
To be on the safe side, better not. What happened could happen again and bottle might melt more.. One suggestion is to use food grade stainless steel bottles. safe and reheat fast. myself using pura kiki
mam bottle is great to use but the parts are being sold at selected places only. guess should not use very high temperature to boil.
If i were you, i won't use it. Cos of the chemicals tat melted plastic will have.