Powders are routinely used to produce useful rheological properties in liquids and polymers. The scaling of elasticity with particle concentration is well understood. The theoretical analysis often depends on the idea that the particle-particle contacts can be characterized by a bending elasticity. Recent meaurements with optical tweezers have verified this mechanism for at least one system. But what is unknown is the source of the bending moment. The soft matter community has rediscovered the Pickering effect - small particles as stabilizers of emulsions and foams. These phenomena depend on the surprisingly strong adhesion of particles to interfaces, which is well understood, at least theoretically. The question we address in this paper is - are the two phenomena related? Is it possible that the bending elasticity is due to residual air at article-particle contacts in dispersions? The air would be trapped with the same strong forces that stabilize Pickering emsulsions and foams. And, since advancing and receeding contact angles are almost always different, then air at a particle-particle contact provides a bending elasticity. Maybe we have rediscovered another old idea, a Jamin effect.