<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
How toxic are the fumes from mixing ammonia and bleach?
<|assistant|>
The fumes from mixing ammonia and bleach are highly toxic and can cause severe health problems. They can cause breathing difficulties, burn the skin and the mucous membranes, and even potentially cause blindness if contact is prolonged. 
It is best to avoid mixing the two products completely, as even small amounts can have these harmful effects. 
Instead, it is advisable to use an alternative cleaner that does not contain both ammonia and bleach to avoid any risks.