Crosse & Blackwell Tangy Mayonaise AMONIAC taste and smell

My daugther and I have been eating Crosse & Blackwell Tangy Mayonnaise on everything for a few years now. Especially chicken schnitzel. The other night we though the Woolworths Schnitzels we bought were off due to a strong amoniac taste and smell - so, we threw them away. This evening we had some mayonaise with dinner again and I realised the same taste and smell was back. I decided to smell the Crosse & Balckwell Mayonaise this time in the bottel and it almost knocked me off my chair with the harsh amoniac smell. I thought the bottle was off... so, I went to the cubboard and took out a brand new bottle - just to smell the same disgusting smell!! I am seriously worried about what has been added to this product. It cannot be legal and I will not buy another bottle. Will just have to find a new brand. Sad but true.