After applying MagicLevelling how long does the smell last ?
The smell of the filler may have various origins such as the nature of the substrate, the thickness applied, the temperature, humidity and ventilation of the room, etc.
The smell will disappear once the filler is totally dry what may take several weeks according to the different factors described above.
In order to speed up the drying time we advise you to warm up the room and allow air circulation.
Anyway, once you paint the wall the smell disappears on its own.