Is carbon filtering vital??

[kronikbud]

I am relatively new to distilling, i have a t500 reflux still. My question is, I up until recently have always carbon filtered my neutral spirit but lately ive just been putting it straight onto JD's oak chips to age and flavour. I havnt noticed any difference in taste from filtered to non filtered neutral and ive been getting what i would consider to be pretty nice stuff. But after a discussion with a fellow distiller i know ive been told that not carbon filtering is extremely dangerous and could poisen or potentially kill someone!!! Is this true???