Can I self transit through Bangkok airport without quarantine on my way to Phnom Penh?

The question asks about the feasibility of self-transiting through Bangkok airport to Phnom Penh without going through quarantine. Comments highlight the importance of having a complete ticket for the journey, as separate tickets may not allow for transit in the airport's designated areas. Furthermore, travelers should remain in the transit area without passing through immigration and customs. It is suggested that checking with the airline may provide clearer guidance regarding boarding passes in the transit area.