According to Apartment Therapy, a too-large load can prevent detergent from thoroughly soaking your clothing, undermining the purpose of washing them
Detergent, fabric softener, and dryer sheets are common, reliable ways to deposit wonderful odours into clothes, so if strong aromas are your thing, don't skimp.
You have several extra DIY alternatives. Apartment Therapy recommends spritzing lavender water on garments before washing or preparing a DIY citrus oil blend
For the latter, mix a cup of baking soda, a half cup of borax, a cup of white vinegar, and 20 drops of your favourite citrus oil and add it to your unscented laundry detergent bottle.
Some advocate putting essential oils directly to filthy laundry before washing it, but be careful
Oils can stain garments, and the quality of your essential oils counts. Instead of raw citrus oil, use floral waters or diluted blends.