smell is an issue

I live in a flat and was thinking of a carbon filter to stop the smell but don't have anywere to vent to what other alternatives can I go for

http://www.onaonline.com/prod-ona-disp-breeze.html
depending on how big your grow area is, this may be an acceptable alternative. I used this on my first grow with 4 plants and it kept the odor under wraps pretty well.

vent the air in to ya house point ya ducting out the bedroom door or what eva

yeah if it's clean air out what's the diff

I vent from a cabinet into my bedroom thru a carbon filter. Also an ONA bucket and there is no smell.