I am at a loss. My gaskets for pressure cookers and my beloved universal silicone lids have become saturated with the stench (now) of old cooked onions and garlic. The odor is nauseating. I tried an over night baking soda soak, no luck. I am now trying a bath in white vinegar. It is reducing it some but still has not removed the odor. Anyone with a similar problem and if so have you solved it and how?