Yes. The most promising new vaccines are intranasal vaccines. By inducing mucosal antibodies in the upper respiratory tract (URT), it creates a front line defense against infection. This is compared to the current vaccines, which induce spike-specific antibodies in the bloodstream. Those antibodies can't be brought to bear against an infection until the infection reaches the blood barrier in the lower respiratory tract. This likely explains why a vaccinated person is just as likely to get and spread Covid, but their odds of severe infection are greatly reduced. Covid is most dangerous when it leaves the URT and starts circulating in the blood.
Here is an example of one of these new vaccines:
A potential COVID-19 vaccine, delivered via a squirt up the nose, shows promise in mice.
med.stanford.edu
There is nothing unusual about getting Covid more than once. The question is whether the subsequent infection is worse than the prior infection. How bad is their new infection? Severe subsequent infections are extremely rare.