There are a few different smells that can keep spiders and bugs away. One is vinegar. You can either use straight vinegar or make a vinegar spray by mixing equal parts water and vinegar. Another option is to mix essential oils with water in a spray bottle. Some good essential oils to use are eucalyptus, peppermint, lavender, and lemon. If you don't have any essential oils on hand, you can also try using citrus peels. Just place them around the areas where you've seen spiders or bugs.