After tuberculosis treatment, some patients develop fungal lung infections that can look very similar to an allergic fungal disease called ABPA. This editorial warns doctors that they need to be careful about diagnosing ABPA in tuberculosis patients because treating it with the wrong medications could make the fungal infection worse. The key difference is that true ABPA causes wheezing and asthma-like symptoms, while post-TB fungal infections cause cavities and scarring in the lungs.