I'm sorry to hear about the situation with your suit jacket. While it's always best to consult with a professional dry cleaner for difficult stains, you can try the following steps at home to remove vomit stains and odors from a polyester blend suit jacket:
Act quickly: The longer the stain sits, the harder it will be to remove. Start the cleaning process as soon as possible.
Gently remove excess vomit: Use a spoon or blunt knife to scrape off any solid or semi-solid material without spreading the stain further. Be careful not to rub it into the fabric.
Pre-treat the stain: Dampen a clean cloth or sponge with cold water and gently blot the stained area to dilute and lift the stain. Avoid rubbing, as it can push the stain deeper into the fabric.
Apply a stain remover: Use a mild detergent or stain remover specifically designed for delicate fabrics. Apply a small amount to the stained area and gently blot with a clean cloth. Follow the product instructions carefully.
Rinse with cold water: After treating the stain, rinse the area with cold water to remove any remaining residue. Again, blot gently with a clean cloth.
Check for odor: Once the stain is removed, you may still have an odor to contend with. Fill a sink or basin with cold water and add one cup of white vinegar. Submerge the jacket in the mixture for about 30 minutes. Vinegar helps neutralize odors.
Hand wash or delicate machine wash: If the care label allows, you can hand wash the jacket using a gentle detergent or machine wash it on the delicate cycle. Follow the instructions on the care label to avoid damaging the fabric. Alternatively, you can spot clean the affected area.
Air dry the jacket: Avoid using a dryer, as heat can set any remaining stains and odors. Hang the jacket on a hanger in a well-ventilated area to air dry naturally.
Keep in mind that these steps are general guidelines, and the effectiveness may vary depending on the specific stain, fabric, and the severity of the situation. If you're unsure or concerned about damaging the suit jacket, it's best to seek professional help from a dry cleaner who has experience with delicate fabrics. Remember, they are accustomed to dealing with all sorts of stains and will likely handle the situation discreetly and professionally.