WADA sets a urine limit for TUE. Not an inhaler per time. This is better as it scares away those pushing the limits.
https://www.wada-ama.org/sites/default/files/resources/files/final_report_11d5vb_dr_backer.pdf
https://www.wada-ama.org/sites/default/files/resources/files/final_report_11d5vb_dr_backer.pdf