Could nasal sprays replace needles for delivering adrenaline to anaphylactic patients?

Instead of stabbing yourself, or someone else, in the thigh with a needle to deliver a dose of adrenaline to counter anaphylactic shock, would it not be easier to use a nasal spray instead?

source https://medicalxpress.com/news/2025-09-nasal-sprays-needles-adrenaline-anaphylactic.html