General Brazilian
ser efervescente
commonly used for both chemical and personality contexts
São Paulo
ser efervescente; estar borbulhando
both expressions are used, second more colloquial
Rio de Janeiro
ser efervescente; estar animado/a demais
personality meaning often expressed with 'estar animado'
Portugal
ser efervescente
standard usage; 'borbulhar' also used for fizzing action