I wouldn’t use olive oil as it’s quite greasy on the skin and clients may not like it.
You could use coconut oil, grape seed oil or almond oil. You could also use baby oil. If you have any after wax oil that would be ok.
I massage feet with after wax lotion which works well on feet, it absorbs quite quickly though, which wouldn’t be ideal for a body massage, I prefer lotion on feet because I don’t want clients slipping on the floor after their massage, nor do I want to be scrubbing oily feet prints off the floor,
You can use a combo of oil and lotion to help you control slip and excessive oiliness. If your emergency oil has quite a strong aroma, mixing with lotion will help,