The DTG printing process can sometimes leave a vinegar-like odor on the printed item. Not to worry! The smell should go away on it's own, but if it persists you can flip the shirt inside out and wash it on cold, dry on low. Or you can rinse the garment in cold water and hang it to dry! Either should get rid of any residual odor. If the smell remains, feel free to let us know at firstname.lastname@example.org!