Memory Foam Mattress Smell

About a week ago we purchased a new hybrid memory foam mattress. The off gassing is so strong we have decided to let it air out as much as possible. We removed all the sheets from the bed, sprinkled baking soda on the mattress and turned the fan on high. It is a little better but still around. Just curious if anyone else had this issue and what they did to correct it.
 
We got a topper recently and the smell was obvious for a few days and then slowly dispersed. We use cozzy mattress cover to avoid the sweat issue.
Comfy nights sleeps to be honest.
 
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