I've never had it happen to me when I ate some blue cheese but blue cheese can make some people hallucinate if they eat enough of it.
It's basically because blue cheese has caffeine in it and in large quantities that leads to caffeine poisoning which causes the person to hallucinate.
Although the hallucinating from the blue cheese is not very serious and will go away within a day or so depending on how much blue cheese you consumed.
The mold that makes blue cheese the blue cheese is very safe to eat.
In fact the blue cheese mold is actually healthy for you and can keep you healthier.
There are certain types of mold that are actually beneficial to your health and the mold used in blue cheese is the type of mold that is very healthy for you.
Not only is the blue cheese mold safe, but it can also be healthy (P. roqueforti and P. glaucum have natural antibacterial properties and ability to over-take pathogens.
So your health will improve as a result of eating blue cheese.
Blue cheese is not tasty for everyone though and myself I find it disgusting but many other people love blue cheese.
We all have different tastes and like different things.