"Airable" is a rather unique word, with its origins rooted in the agricultural sector, where it refers to the process of exposing soil to the air. However, when looking for synonyms to convey a similar meaning, one could use terms such as "ventilate", "aerate" or "oxygenate" to describe the process of allowing air to circulate through the soil. These words are often used in the context of improving soil quality or promoting plant growth. Additionally, words like "breathable" or "airy" could be used to describe a comfortable or well-ventilated space. These synonyms provide alternative ways to express the concept of air circulation or exposure in different contexts.