Make sure your home does not have an underlying plumbing or septic tank issue that is causing the odor. Call a qualified plumber to examine the home and determine where the septic smell is coming from and whether there is a plumbing backup, drainage or pipe issue that needs to be repaired in order to return your sewage system to proper working order and eliminate the smell. Make any necessary repairs.
Turn on the bathroom vents and open the windows. If possible, bring a fan into the bathroom to improve ventilation and help blow out bad smells.
Clean the bathroom thoroughly with a scented cleaning product. Make sure to clean drains, vents and around plumbing fixtures. Wash and dry shower curtains and towels that may have absorbed the septic smell.
Put a plug-in or stationary air freshener in the bathroom. Get a spray air freshener to spray after using the bathroom or upon entering.
Keep your bathroom clean. Avoid throwing trash away in the bathroom or letting it sit for any length of time. Always flush the toilet immediately after use.