Should a carbon flter get rid of 100% smell?

Assuming it is a properly sized filter and the ventilation is leak free, yes it should eliminate the smell completely. They are very effective at what they do.

I found it critical to ensure that you have a proper filter/blower combo. Make sure that the filter is of adequate thickness to accommodate the desired CFM blast. It is said that the air particle must take minimum .1 seconds to travel through the charcoal bed to be effective. So, if you are pushing 200cfm through the filter you will need at minimum an 1.5 inch thick filter (this is the actual carbon bed thickness) For 200 cfm, at least 14 lbs of carbon will do . I found most of the generic filters sold in hydro stores inferior. Get a can-filter series. They work !! Now ozone also works but you have to be careful not to breath too much of the o3. Direct O3 may also cause plant damage. The filter though is IMO the best way to go and should give you 100% protection........BUT... are condoms 100%? There's always that chance of a little escapement. Best bet is to go ahead and supplement with a low level ozone unit like CAP's Junior. It's timed so you won't OD on it.

assuming its large enough and setup properly yes, it should take care of it.

mine is working very well

Have my grow cabinet in the garage which I also work out of and have customers stop by all the time

No one has even notice a hint of smell from my buds and they do STINK

I have a small cabinet with a 165 cfm fan fulling air threw a carbon filter I bought from the local hydro store