The man wrote that he arrived at Suvarnabhumi Airport from Barcelona after a transfer in Abu Dhabi and fully expected to be screened, but instead breezed through. 
Anutin said Thailand has collaborated with four countries to make sure no one is allowed to book a flight to Thailand unless they have a medical certificate of health issued no more than three days prior to their travel date. 
The airport also has unmanned equipment to automatically screen all arrivals for high body temperature, he said. 
“Our screening is not reckless,” he said. “We have not missed anyone who is infected, and all arrivals must quarantine themselves for 14 days anyway. If they cough, sneeze and have cold, they will be monitored via the AOT application.”

Anutin brushes aside claim of lax screening

Asked why a man returning to Thailand from Spain could declare on Facebook that he underwent no airport screening, Public Health Minister Anutin Charnvirakul had to point out that Spain isn’t among the high-risk locales worrying the government most.