If the noise is lower, the AC service may be the cause. Magnetic fields from transformers can cause humming. Mains transformers typically cause an AC magnetic field around them. This magnetic field can be copled to wiring, electronics or signal transformers and cause humming.
Baby oil benefits: ear. Mineral or baby oil is good from treating common ear problems, such as wax build-up. For those that are hard of hearing, we recommend using a few drops of heated baby oil before going to your ear specialist. Then pour the drops in your ear, keeping your head cocked. Hold for a few minutes.
JOJOBA OIL. Jojoba oil is not actually an oil as such, but rather, a form of liquid wax. This makes it more stable than other carrier oils and makes it suitable for use with babies and for those with sensitive skin. It is excellent for use on skin conditions such as psoriasis and eczema.