Noalox or another compound may help, but you essentially have to try and break in the threads of the atomizer.
Not trying to be argumentative, snide, or rude, but that is horrible advise.
Noalox rule: NEVER use Noalox on atty connector threads.
Why? As per Ideal industries MSDS for Noalox, it is soluble in water and the Zinc dust present in Noalox reacts with water. Also, it states to avoid excessive heat and burning, as it will release oxides of carbon. It also states to avoid conditions of moisture or high humidity.
All that simply put: Noalox on your atty connector threads can (and probably will) mix with nic juice if it were to leak, and there's the possibility of vaping said mixture (however rare it may be). Not trying to scare people (I actually use Noalox on every mod I own), just saying you've got to think ahead when using any chemical.
Ingestion first aid is recommended induction of vomiting and consultation of physician.
Ideal Industries MSDS for Noalox:
http://www.idealindustries.com/media/pdfs/products/msds/noalox_msds.pdf