Could antibiotics like meropenem been taken intranasal instead of taking them intravenous for example with devices like the mad 300?

Could vs should: In order for a med to be given intranasally by an atomizer like mad300, the med must be approved for intranasal use. Approval factors include safety to nasal mucosal membranes, solubility of med, ability of med to get into blood, and amount needed. Absorption can be affected by nasal disease (eg allergies), so not the best way to give antibiotics or some other meds requiring specific doses.