Vinegar soak
White vinegar is a natural deodorant. Soak silicone products in a mixture of white vinegar and water, approximately 1:1, for 1-2 hours. White vinegar will neutralize soap residue while eliminating odor.
Pure soda.
Baking soda is a common cleaning agent with odor-removing function. Lubricate silicone products with water, then sprinkle baking soda on them, lightly rub the silicone surface, and then rinse it with clean water. This method is ideal for getting rid of stubborn soap odor.

Sunlight
Ultraviolet rays from sunlight can help break down the residual chemicals on the silicone surface, thereby reducing or eliminating the odor. Keeping silicone products in the sun for several hours, but it is necessary to avoid long-term burning, so as not to age the materials.
Boiling water
Boiling silicone products in boiling water for 5-10 minutes can effectively remove deposits on the surface and sterilize them from the inside at the same time. This approach is especially suitable for working with food contact products such as baby pacifiers, silicone bowls, etc.
Soaking in lemonade
Citric acid has a deodorizing effect. Soaking silicone in lemonade can effectively get rid of the soapy smell and leave a little fresh scent.
All of the above methods are natural and safe for daily family use. After cleaning, make sure the silicone products are completely dry, and make sure there is no residual odor or chemical when using them.
Lastly, I would like to remind you before buying, how competent is the seller, whether he is a qualified manufacturer of silicone products, and whether their silicone products are competent. Just pay attention to these questions, and I am sure you will get a high-quality silicone product without odor.