Thank you everyone. I did try the 510 atty and it worked perfect. Also, Vchick you were right about cinnamon. Unfortunately, I read your post too late.
To remove a stubborn flavor, do the following:
Rinse in the hottest water you can stand them blow it out.
Get a shot glass or something similar.
Pack the atomizer opening in baking soda.
Pour white vinegar into it slowly...the fizzing action helps to get the gunk out.
Now fill up the glass or whatever with white vinegar and let it sit for 20-30 minutes.
Pour out and rinse in hot water.
Blow it out.
Add a few drops of lemon juice to the atomizer bridge and let sit for 10 minutes.
Rinse in hot water and blow out.
Add a few drops of unflavored VG and vape off without inhaling unless you like lemon juice.
Flavor should be gone. This also removes the "burnt" tastes that we sometimes encounter with atomizers.