Spray it with Febreeze and see if that helps.

Maybe rub baking soda into the fabric, leave for a day and then vacuum good.

Obviously the odor has penetrated deeper than outside covering. Not sure how to deodorize the stuffing.

Thanks, I will try. Today I spread talc everywhere hoping that it will absorbe the odor...

Have you considered calling Herman Miller and asking for their suggestion for cleaning the chair.

That is a good suggestion. I will call them. The talc did not work much.

TX

You might try something like Smells Begone.

Here is a link that might be useful: Smells Begone.

My Mother gave me a leather chair. She was a heavy smoker and I could not get the smell out of that chair. I tried Febreze (did not work) and even a odor remover that I buy from a janitorial supply company. The odor remover would last for a few weeks and then the smell would come back. I think it would slowly come from the stuffing out through the leather. I finally gave it away.

Maybe call an upscale furniture store or high end rug store and ask for recommendations. Also places that advertise that they clean after having a fire or water damage might be able to remove the smell.

Milele did you get it off? I have the same issue with mine. I have no idea what the person sprayed on the thing, but I can't get the smell out.